Include jQuery as dependency

[humitos]

It seems that Sphinx will remove jQuery in the future releases, see https://github.com/sphinx-doc/sphinx/issues/7405

When that happens, we will need to vendor our own jQuery version because tooltipster requires it.

[nienn]

Related issue: https://github.com/readthedocs/sphinx_rtd_theme/issues/1253

[humitos]

The removal will happen on 6.0: https://github.com/sphinx-doc/sphinx/issues/10070

[humitos]

This will be managed by the sphinx-jquery extension we plan to create in the near future. I'm removing it from my current sprint because I'm not working on it for now.